s 13 Anticipatory exercise of powers.
Where an Act which (or any provision of which) does not come into force immediately on its passing confers power to make subordinate legislation, or to make appointments, give notices, prescribe forms or do any other thing for the purposes of the Act, then, unless the contrary intention appears, the power may be exercised, and any instrument made thereunder may be made so as to come into force, at any time after the passing of the Act so far as may be necessary or expedient for the purpose— (a) of bringing the Act or any provision of the Act into force; or (b) of giving full effect to the Act or any such provision at or after the time when it comes into force.